Movement of Molecules

When the number of water molecules outside of the cell is greater than inside the cell, which will most likely occur?

• Molecules of water will NOT MOVE either way.

• Molecules of water will move OUT of the cell.

• Molecules of water will move INTO the cell.

• Molecules of water will EVAPORATE.

Tags

NGSS.MS-LS1-2

Why are water molecules able to enter the egg but NOT the sugar molecules?

• Sugar molecules are too heavy.

• The holes of the semi-permeable membrane were too small to let sugar molecules through.

• Semi-permeable membranes need energy.

• Semi-permeable membranes must be under pressure to work.

Tags

NGSS.MS-PS1-1

What is diffusion?

• when molecules move from a low concentration to a high concentration 
• when molecules move from a high concentration to a low concentration.
• no movement 
• molecules move everywhere

Tags

NGSS.MS-PS1-4

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Tags

NGSS.MS-ESS2-4

If there is 5 percent water inside a cell and 5 percent water outside a cell

• more water will move inside the cell
• more water will move outside the cell
• There will be no movement of water cells

Tags

NGSS.MS-LS1-2

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of

• Osmosis
• Diffusion
• Equilibrium

What does “high concentration area” mean?

• Spread out
• Tightly packed together
• Uncrowded
• Spacious

Tags

NGSS.MS-ESS3-1

Permeable means

• things can pass through
• the concentration levels are different
• it is permanent
• things are stuck

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

What is the direction of osmosis?

• From the left to the right.

• From the right to the left.

• There is no direction as osmosis is not occurring.